<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style>
		       /*==>     *{} 代表选择所有标签          <==*/
			*{
				color:red;
				/*删除文字下面的横线*/
				text-decoration: none;
			}
			a{
				color:blue;
			}
		</style>
	</head>
	<body>
		<a href="">首页</a>
		<a href="">视频</a>
		<div>我是div标签</div>
	</body>
</html>
